# New Animal Drugs for Use in Animal Feeds; Laidlomycin and Chlortetracycline
> **Food and Drug Administration** · Final rule. · Published 2003-03-21 · Effective 2003-03-21 · 68 FR 13839
## Document
- **Document number:** 03-6508
- **Category:** other
- **Sub-agency:** Food and Drug Administration
- **Federal Register citation:** 68 FR 13839
- **CFR reference:** 21 CFR 558
- **Publication date:** 2003-03-21
- **Effective date:** 2003-03-21
## Abstract

The Food and Drug Administration (FDA) is amending the animal drug regulations to reflect approval of a new animal drug application (NADA) filed by Alpharma, Inc. The NADA provides for the use of approved, single-ingredient Type A medicated articles containing laidlomycin and chlortetracycline to formulate two-way combination drug Type C medicated feeds for cattle fed in confinement for slaughter.

## Source
- [Federal Register document](https://www.federalregister.gov/documents/2003/03/21/03-6508/new-animal-drugs-for-use-in-animal-feeds-laidlomycin-and-chlortetracycline)
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